annotate src/core/ngx_murmurhash.h @ 7048:80224192163c
Resolver: fixed possible use-after-free while resolving SRV.
Resolving an SRV record includes resolving its host names in subrequests.
Previously, if memory allocation failed while reporting a subrequest result
after receiving a response from a DNS server, the SRV resolve handler was
called immediately with the NGX_ERROR state. However, if the SRV record
included another copy of the resolved name, it was reported once again.
This could trigger the use-after-free memory access after SRV resolve
handler freed the resolve context by calling ngx_resolve_name_done().
Now the SRV resolve handler is called only when all its subrequests are
completed.
author |
Roman Arutyunyan <arut@nginx.com> |
date |
Tue, 04 Jul 2017 18:07:29 +0300 |
parents |
709d7d24239d |
children |
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line source |
3891
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_MURMURHASH_H_INCLUDED_
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9 #define _NGX_MURMURHASH_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14
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15
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16 uint32_t ngx_murmur_hash2(u_char *data, size_t len);
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18
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19 #endif /* _NGX_MURMURHASH_H_INCLUDED_ */
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